netdev - Re: [PATCH 2/3] TI Davinci EMAC : add platform specific interrupt enable/disable logic.

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Date:	Wed, 18 Nov 2009 12:08:24 -0700
From:	Troy Kisky <troy.kisky@...ndarydevices.com>
To:	Sriramakrishnan <srk@...com>
Cc:	netdev@...r.kernel.org,
	davinci-linux-open-source@...ux.davincidsp.com
Subject: Re: [PATCH 2/3] TI Davinci EMAC : add platform specific interrupt
 enable/disable logic.

Sriramakrishnan wrote:
> On certain SOCs, the EMAC controller is interfaced with a wrapper logic
> for handling interrupts. This  patch implements a platform
> specific hook to cater to platforms that require custom interrupt
> handling logic
> 
> Signed-off-by: Sriramakrishnan <srk@...com>
> Acked-by: Chaithrika U S <chaithrika@...com>
> ---
>  drivers/net/davinci_emac.c   |   11 +++++++++++
>  include/linux/davinci_emac.h |    2 ++
>  2 files changed, 13 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
> index 6aec8f5..81931f8 100644
> --- a/drivers/net/davinci_emac.c
> +++ b/drivers/net/davinci_emac.c
> @@ -487,6 +487,9 @@ struct emac_priv {
>  	struct mii_bus *mii_bus;
>  	struct phy_device *phydev;
>  	spinlock_t lock;
> +	/*platform specific members*/
> +	void (*wrapper_int_enable) (void);
> +	void (*wrapper_int_disable) (void);

Would platform_int_enable be more appropriate then wrapper_int_enable ?

>  };
>  
>  /* clock frequency for EMAC */
> @@ -1001,6 +1004,8 @@ static void emac_int_disable(struct emac_priv *priv)
>  		emac_ctrl_write(EMAC_DM646X_CMRXINTEN, 0x0);
>  		emac_ctrl_write(EMAC_DM646X_CMTXINTEN, 0x0);
>  		/* NOTE: Rx Threshold and Misc interrupts are not disabled */
> +		if (priv->wrapper_int_disable)
> +			priv->wrapper_int_disable();
>  
>  		local_irq_restore(flags);
>  
> @@ -1020,6 +1025,9 @@ static void emac_int_disable(struct emac_priv *priv)
>  static void emac_int_enable(struct emac_priv *priv)
>  {
>  	if (priv->version == EMAC_VERSION_2) {
> +		if (priv->wrapper_int_enable)
> +			priv->wrapper_int_enable();
> +
>  		emac_ctrl_write(EMAC_DM646X_CMRXINTEN, 0xff);
>  		emac_ctrl_write(EMAC_DM646X_CMTXINTEN, 0xff);
>  
> @@ -2662,6 +2670,9 @@ static int __devinit davinci_emac_probe(struct platform_device *pdev)
>  	priv->phy_mask = pdata->phy_mask;
>  	priv->rmii_en = pdata->rmii_en;
>  	priv->version = pdata->version;
> +	priv->wrapper_int_enable = pdata->wrapper_interrupt_enable;
> +	priv->wrapper_int_disable = pdata->wrapper_interrupt_disable;
> +
>  	emac_dev = &ndev->dev;
>  	/* Get EMAC platform data */
>  	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> diff --git a/include/linux/davinci_emac.h b/include/linux/davinci_emac.h
> index ff55487..eb24dc0 100644
> --- a/include/linux/davinci_emac.h
> +++ b/include/linux/davinci_emac.h
> @@ -25,6 +25,8 @@ struct emac_platform_data {
>  	u32 mdio_max_freq;
>  	u8 rmii_en;
>  	u8 version;
> +	void (*wrapper_interrupt_enable) (void);
> +	void (*wrapper_interrupt_disable) (void);
>  };
>  
>  enum {

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